Carburetor



y en

Patented Aug. i l 1,931-

SIDNEY Ln envar: vAnvE-L, yor BEBQWRA, 'New SOUTH WnILEs, AUSTRALIA cARBUnEmoR Y f Applicatiqn mea Aiigusf 2'4, 192s; fseriai110.301,87. Y

This invention relates to an improvedcar- .l buretor in which the main'supply of airisv drawn through a layer of Vliquid fuel -Qf constant depth and is filtered before'it passes engine manifold. i* 'v In the. accompanylng drawings vice l Fig. 2`is a plan vof the top plate of the well. ,y l A main vaporizingchamber 101s fitted with a centrally positioned vair inlet tube 11 of relatively large ydiameter which opens The air tube inlet is'fitted with an adjustable rotary air valve 12A controlled at will by carburetor.y

VDetachable ymetalV form of inverted truncatedV cones are inserted in thechamber 7'10. A space isleft between the inner edgel of `each plate 13 and Q the Apipe 14, 15 and an intermediate layer 16'offelt VA perforated metalfplate 17 fitted about the outlet end ofthe airy fcap for the well 12'.

Liquid fuel, indicated referencenumy' 'l 'y ber 18, yis maintained at arc'onst'ant'vlevel in thefchamber 10-by meansfof'a pipe `19Vjc'on-v nected with a float chamber of ordinaryconstruction, and to preventundue splasliin`,` `r,of

the liquid yfuelaperforated corkl float 20 isy inserted inthe chamberlO,

From the top of chamber small diameter and pe'rforatedat its yinlet end opens intov av mixing chamber 22which Vis adapt-ed to be connected with the engine "manifold s Y y f, l

An Vadjustablegas valve'23 is mounted in y `delivered byk the Vpipefmayffbe "controlled at will,A andan idling passage orbypass 24 provided witha regulating screw 25 is fittedv inthe pipe 21bel1ind the valve 23. A butterfly valve26 isf'mountediiiv the into a mixing chamber connectedl with the Fig. is a sectional elevation of the den Y into a well 12in the bottom of the chamber.

the operator` and preferably from: the dashboard 'of a vehicle ltted with. the'A bafe plates 13 -rinthe' 11, and above thebatle plates is, fitted a removable'fuel {iilter which consistsvi of upper and lower perforated, metal-plates` tubeV 111 forms. a4

10 iafpipe of.

. gas pipe 21jin order that the amount of fuel a iii,

jrmixin'gchamber 22-belowtheyoutlet Vo f pipe `r 21 to` control the admission of extrarair.

In operatiomfV air is drawn ythrough the'.` l airyalVe-12Ainto the air tubell and passes ,K

into the swell 12 from which it Vemerges as args series of streams which rise through the vlayer of liquidfuel and become saturated Y Awith fuel.y Globules of liquid carried .up by the airv streams'strikethe baffle plates 13 and- Vare returned tothe body ofliquid fuel.V The 5&0 i

saturated aircarrying some fuel mist passes through the spaces between the ballles 13 and the pipe 11, istilte'red bythe lilter 1444-16 and passes in gaseous form throughthe gas -pipe 21 intok the mixing chamber 22 where'f l it is mixed withfthe' desired quantity off p' eXtra'l air. l

, Iclaimz 'Y H lifAf'carburetor,comprising in combination, a vaporizing chamber,'a'well in vtheiio bottom of the chamber, a perforated disk j i coverfor the well, an air*r inlet tube ofrela#VV tively large diameter extending vertically 4*through theV chamber into the Well, a manu- Y c, Vally controllable air/valve onu-the outer endfl v' `of the'tube, a-'splash-preventing perforated.

an outletvpipe in the top vofthe chambery] and Va float-controlled fuel .Supply chambe in kcommunication with fthe vap rizingy chamber near its base.' f I A V2. A carburetor, comprising in combina tion, a vaporizing chamber yhaving a well` in its baseiand'a' Y]g erforateddisk cover for f *mi v c the Well, asplash-preventing perforated* cork-floatV in' the chamber, inverted; truncated cone-shaped baflie plates mounted on the walls lof thechamber above the `float,

spaced i perforated metal plates mountedgon,

vthe 'walls of the chamber 'abovethe batflefl l i plates, `a 'felt layer between the metalplates,v 1

avertical `air-inlet tubeof relatively large diameter extending through lthe plates corkfloat and Well cover y. into nthe, well, an airrcontroljvalve`on the tube`,-anr outlet pipe offllot i corkfloatfin thechamber, linverted trunc, pcated cone-shapedbaille plates'mounted -iny 4 .c ".the chamber above theffloat, spaced perfo'- Vrated metalV plates mounted inthe chamber f i above the balfle plates, a straining -layer offV 'fi K g felt'between the-@perforated`metal5xplates, -4 i relatively small diameter in the top of the chamber, a bypass in the outlet pipe, a valve in the outlet pipe beyond the bypass7 and a float-controlled fuel chamber in communicaion with the base of the Vaporizing Chani- In testimony whereof I have alixed myV signature. f

SIDNEY LEFEVRE VARVEL. 

